Purple corn nectar containing anthocyanins methods for making and applications thereof

Abstract

The present invention relates among other things to a method for making enzymatically produced purple corn nectar having a composition comprising saccharides and. anthocyanins. The anthocyanin composition is present in concentrations of at least 40 mg/100 g of nectar and is a direct result of the process of making the corn nectar from the purple corn kernels and does not constitute an exogenous addition to the purple corn nectar.

What is claimed is: 
     
         1 - A process for making purple corn nectar containing native anthocyanins, said process comprising the acts of:
 a. grinding purple corn kernels to form purple corn grits;   b. adding sufficient water to cover the above purple corn grits and stirring to mix the grits and water;   c. reducing the pH of the water and grits suspension with an acid to a value between 4 and 5;   d. holding the acidified water and grits suspension at 60° C. for about 20 hours;   e. removing the suspension from the 60° C. temperature;   f. adding a first saccharification enzyme;   g. cooling the acidified grits and water after the first saccharification enzyme to 35° C.;   h. filtering the mixture from step (g) in a colander lined with cheese cloth or a fine mesh fabric;   i. adding a second saccharification enzyme and stirring well;   j. bringing the mixture to 60° C. and holding it at this temperature for 30 minutes;   k. bringing the mixture to a boil and holding for 1 minute   l. simmering the mixture for 15 minutes;   m. fine filtering the mixture   n. concentrating the said mixture to form a nectar by evaporation.   
     
     
         2 - The process of  claim 1  wherein the grits have a particle size 600 microns or less. 
     
     
         3 - The process of  claim 1  wherein the grits have a size larger than 600 microns. 
     
     
         4 - The process of  claim 1  further comprising the act of evaporating a substantial amount of the water to obtain a powder. 
     
     
         5 - The process of  claim 1  further comprising the act of adding an isomerizing enzyme.